[wxperl-users] STC + wrapping long texts = crash

[Joe Y. <jyo...@jo...>]

I'm finding that if I have a lot of text to display (write to the =
control) and I have the SetWrapMode(1) for wrapping at word boundaries =
and the text scrolls, the program will crash to an illegal operation.

I've read on Scintilla documentation that the word wrapping doesn't take =
place immediately...to quote:

If a file is read and the scroll position moved to a particular line in =
the text, such as occurs when a container tries to restore a previous =
editing session, then the scroll position will have been determined =
before wrapping so an unexpected range of text will be displayed. To =
scroll to the position correctly, delay the scroll until the wrapping =
has been performed by waiting for an initial SCN_PAINTED notification.

How do I delay the scroll until the wrapping has completed?


Here's some code:

$this->{STC} =3D Wx::StyledTextCtrl->new( $ArticleEditingPanel, -1, [3, =
190], [750, 300] );
$this->{STC}->SetToolTip( "The Text of the Article" );
$this->{STC}->StyleSetFont(wxSTC_STYLE_DEFAULT, $font);
$this->{STC}->StyleClearAll();
$this->{STC}->StyleSetSpec( wxSTC_H_DEFAULT, "fore:#000000" );
$this->{STC}->StyleSetSpec( wxSTC_H_TAG, "fore:#000088" );
$this->{STC}->StyleSetSpec( wxSTC_H_ATTRIBUTE, "fore:#000088" );
$this->{STC}->StyleSetSpec( wxSTC_H_COMMENT, "fore:#008800" );
$this->{STC}->StyleSetSpec( wxSTC_H_DOUBLESTRING, "fore:#880000" );
$this->{STC}->StyleSetSpec( wxSTC_H_SINGLESTRING, "fore:#880000" );
$this->{STC}->StyleSetSpec( wxSTC_H_VALUE, "fore:#880000" );
$this->{STC}->StyleSetSpec( wxSTC_H_NUMBER, "fore:#880000" );
$this->{STC}->SetLexer( wxSTC_LEX_HTML );
$this->{STC}->AddText( <<'EOT' );
<p>A year ago, three strokes separated Lafayette Sectional boys golf =
tournament rivals Harrison, West Lafayette and Lafayette Jeff.
<p>"It seems like when we play Jeff and Harrison, we play our best =
golf," said West Lafayette senior Avery Boaz, who shot 77 in the 2002 =
sectional. "We all play well at this course, and it also helps when you =
are paired with excellent talent.
<p>"We've shown we can put up good numbers, but in the end, It comes =
down to how they feel about themselves during one round," Schneider =
said. "The good thing about these pairings is that we will play with =
West Lafayette, Jeff and Frankfort.
<p>Don't be surprised if today's battle for sectional bragging rights at =
the par 72 Lafayette Golf Course is every bit as close.
<p>Twelve teams -- led by 2002 champion Harrison -- will compete for the =
title, along with two other berths for the Lafayette Regional, set for =
June 12.
<p>But if recent form holds, Harrison, West Lafayette and Jeff are the =
teams to beat. The Raiders won last year with a 311. West Lafayette shot =
313 and Jeff had 314.
<p>"Sometimes, it's hard to get pumped up to play your best when you're =
competing against someone you should beat."
<p>In a sectional tuneup, Harrison defeated WL 318-325 in Wednesday's =
dual meetat Coyote Crossing -- the Raiders' home course. Harrison =
sophomore Clint Mathews shot 78, sharing medal honors with the Red =
Devils' Tyler Ellis.
<p>"Harrison is the team to beat ... very solid," Boaz said. "Jeff is =
very solid, too. We are a little weaker than we've been in the recent =
past, but we will be right there.
<p>"We have a lot of fun during the regular season, but when it comes to =
the sectional, we get ready for serious competition."
<p>Jeff senior Nick Lundstrom, who shot 77 in helping the Bronchos win =
the 2001 sectional by 17 strokes over second-place West Lafayette, is =
eager to finish his high school career with a sectional title.
<p>"Since we didn't win last year, we are going to be motivated," =
Lundstrom said. "I think it's going to be really close between us, =
Harrison, West Lafayette and Frankfort.
<p>"We've been struggling a little bit lately, but we're starting to =
turn things around. The championship is up in the air. Our area has =
great competition, so it's going to come down to who is ready to play."
<p>For Harrison coach Dave Schneider, four scores in the 70s always is =
the goal. But in the sectional, that's a difficult task. The Raiders are =
gunning for their third sectional title in six years.
<p>"The kids will feed off each other. The competition and the challenge =
is right there. I've told the guys to play one stroke at a time, do your =
best and see what happens. We need to be close after nine holes."
<p>Harrison is 12-1 in dual meets, won the Benton Central and McCutcheon =
invitationals and placed third in the rugged Hoosier Crossroads =
Conference tournament.
<p>That's a strong sectional-contending resume, but Schneider =
acknowledges that the Lafayette Golf Course -- with its huge elevated =
greens -- is a different layout than the Raiders' Coyote Crossing.
<p>"I don't know if our team enjoys the Lafayette Golf Course, but at =
least they are familiar with it," Schneider said. "Sometimes, it drives =
them crazy with those giant greens."
EOT


This will crash.

But if you remove text so that the control doesn't have to draw a scroll =
bar (vertical) then all is well.


Any pointers?

JY